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Saturday, March 13, 2010

Data quality in BI projects

SQL Server 2005 | SQL Server 2008 | SQL Server 2008 R2

There is a new testing suite for BI solutions named BI.Quality available at codeplex: http://biquality.codeplex.com/. The suite is based on NUnit and supports quite a lot of different testing methods. What I like most is the ability to automatically compare result sets from different sources, for example SQL and MDX. This allows you to define test scenarios your system must meet after the OLAP cube has been loaded. Or think of migration projects where you can still run queries against the old system and compare the results with the new system. As everything can be automated, tests can be run on a regular basis (for example directly after every cube processing) to make sure, that all facts are really complete and correct.

1 comment:

Hello Hilmar.Very interesting.Found where queries are stored. They only I did not get yet is where those "MDX-Test1" and "SQL-Test1" steps are described.Waiting for English docs.The only way I see is that the project picks up all XML steps from Queries folder.